2004 Mercury Monterey Owner's Manual - Page 231

Maintenance and Specifications Your vehicle was factory-filled with a 50/50 engine coolant and water concentration. If the concentration of coolant falls below 40% or above 60%, the engine parts could become damaged or not work properly. A 50-50 mixture of coolant and water provides the following: • Freeze protection down to -36° C (-34° F). • Boiling protection up to 129° C (265° F). • Protection against rust and other forms of corrosion. • Enables calibrated gauges to work properly. When the engine is cold, check the level of the engine coolant in the reservoir. • The engine coolant should be at the "FULL COLD" level or within the "COLD FILL RANGE" as listed on the engine coolant reservoir (depending upon application). • Refer to the Scheduled Maintenance Guide for service interval schedules. • Be sure to read and understand Precautions when servicing your vehicle in this chapter. 231 2004 Monterey (mty) Owners Guide (post-2002-fmt) USA English (fus)